/Engine/Plugins/Online/OnlineSubsystem/Source/Public/NamedInterfaces.h
Named interfaces are a registry of UObjects accessible by anFNamekey that will persist for the lifetime of the process
[UCLASS](Programming/UnrealArchitecture/Reference/Classes#classdeclaration)(Transient, Config=Engine) class UNamedInterfaces : public [UObject](API\Runtime\CoreUObject\UObject\UObject)